Hibiscus is a tropical flowering plant, native to Asia and the Pacific islands that blooms in every color except blue and black. Because it is a tropical plant it does not tolerate cold, cloudy and rainy weather and cold soil. According to the American Hibiscus Society, the hibiscus should not be grown north of USDA zone 9 unless grown in pots and taken indoors when the weather turns foul.
Take cuttings, 4 to 6 inches long, from the hibiscus plant, using sharp pruning shears.
Use the razor blade to cut through a leaf node (the area on the stem where the leaf joins) at the bottom of each cutting. Make this cut diagonally. Remove all the leaves from the cutting, leaving two or three at the top.
Combine three parts of coarse sand and one part sphagnum peat moss and pour it into the planting pot. Water the soil until it is completely wet and allow it to drain. Poke holes in the soil for the cuttings, using a pencil or your finger. You can plant as many cuttings as you like per pot.
Dip the diagonally cut end of the cuttings into the rooting hormone.
Insert the cuttings into the holes in the soil and pack the soil around the base of the cutting.
Place the cuttings in a partially sunny area that remains 70 to 85 degrees F. Growers at Hibiscus World suggest placing the cuttings in the shade of a shrub where they will get filtered morning sun.
Mist the cuttings several times a day and make sure that the soil remains moist. Your cuttings should root within six to eight weeks.
Remove the cuttings from the pot and gently separate them. Using the same ratio of sand to peat moss, fill individual pots halfway with the medium, moisten it and place the roots of the cutting into the soil. Fill the pot the rest of the way, to within 1/2 inch of the rim of the pot. Tamp down gently on the soil.
Allow the cuttings to remain in the pots indefinitely or plant them in the garden in spring, when temperatures remain higher than 70 degrees F.